Michael Axel , Jan 31, 2007; 05:36 p.m.
It will do, but I'd rather work from a RAW image myself. If the printer is 300 DPI, then you should be able to adjust the size by downsampling it in PS or some other program to 8x10", etc. It should print fine, but the color from a JPEG is kind of dicey. While the lab will likely take the file, I think you're better to control the dimensions yourself rather than letting the computer program they have do it.